Where is everyone #5

Discussion in 'Flatbed Trucking Forum' started by DDlighttruck, Aug 27, 2017.

  1. ElmerFudpucker

    ElmerFudpucker Road Train Member

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    I guarantee she’s gonna jump in price at the last minute. That’s how all those internet auctions go
     
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  3. CAXPT

    CAXPT Road Train Member

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    ROFLMAO, love a good parody/novel jam recreating the original sound as well. :)
    :headbang:
     
  4. HillbillyDeluxeTruck

    HillbillyDeluxeTruck Road Train Member

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    Who feels like helping the special needs guy? 02 Pete 379

    Headlight switch failed. The spade connector for the power out on the switch is loose and wont make contact for my headlights to come on. Can't ger a switch till morning, but in my infinite wisdom of pulling the 4 wires off (the black plastic connector they go into is M.I.A.) I somehow forgot which one is which. I have black, brown, red and...green.

    Crappy pic below:

    20260311_210307.jpg

    Edit: Normally I would use my volt meter to figure it out, but I also left the house this morning with all my road tools still in my Excursion. So atleast I got that going for me
     
    Last edited: Mar 11, 2026
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  5. blairandgretchen

    blairandgretchen Road Train Member

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    IMG_0293.jpeg

    298 is hot

    239 is ground

    24 is power to the headlight relay (left and right) (kick panel fuse box)

    B8 goes to the marker light relay (kick panel fuse box)

    This is from a pre 94 schematic, but I'm guessing it'll be the same setup.
     
    Last edited: Mar 11, 2026
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  6. sawmill

    sawmill Road Train Member

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    Unfortunately the current logic is that if they let the current hand bumble through hauling stuff himself on equipment not suitable for the task at hand at least it keeps him busy so they don't have to come up with more work to entertain him. Profitablity isn't even on the radar.
     
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  7. blairandgretchen

    blairandgretchen Road Train Member

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    https://www.supermiller.com/pdf/sk25762.pdf

    Here is your year, I think. Same as the screenshot I grabbed too.

    For some reason I'm thinking Black and brown are headlight and Clearance light feeds, leaves Red and Green as a toss up for power/ground?

    Test light would at least give you power and ground, and I don't think you'll hurt the relays if you switched Clearance /headlamp on a 50/50 shot. ?

    (P.S. NOT A MECHANIC), but @sawmill armed me with enough to be dangerous in this field. He did not however, increase my fire risk coverage on the insurance policy.
     
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  8. sawmill

    sawmill Road Train Member

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    Screenshot_20260311-211744~2.jpg
    I don't really have a good reason to bid on this but I'm not letting it stop me
     
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  9. CAXPT

    CAXPT Road Train Member

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    Best I could find in the Public domain aspect is as follows:
    Black - Low Beam Positive
    Red - High Beam Positive
    Green - Negative​
    The second black, I'm having to guess goes to the Marker lights, but don't quote me, as I can't rely on the information I was able to find, and I'm sorry, but I don't own manuals and couldn't find with the amount of time I searched, for a Switch Plug wiring diagram. Everything shows either just the guage. I got this from a French page, where the pictures were in English print.

    peterbilt-379-headlight-wiring-diagram-kdvl.png

    My assumption, is that the wiring continues up to the in dash switch, the part you're holding, as I saw a picture of that at 4 State, but no indication of which color/wire goes where, so take this with a grain of salt. :)
    :banghead:
     
    Last edited: Mar 12, 2026
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  10. HillbillyDeluxeTruck

    HillbillyDeluxeTruck Road Train Member

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    Thanks guys. The red and green wires are larger, obviously to carry more current. The black and brown wires are smaller, making me think black is a ground and brown runs over to the clearance lights because there is a brown on it as well.

    I popped 1 fuse and said nope to messing around any more on it. I'll grab a switch and test light tomorrow.
     
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  11. CAXPT

    CAXPT Road Train Member

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    I have to agree according to the schematics as I followed them, 239 probably is ground. My thoughts are that these lights that I have a pic of are LED and if you don't have LED, then, yeah that would change the possible color scheme. The problem is that unless there is a diagram of the switch, everything here is guess work, so sorry we couldn't do better.

    @blairandgretchen , I am a mechanic, but without a detailed schematic and pictures, it's either guess work or troubleshooting with meter...and neither one of us is there to do it. :)
    :banghead:
     
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